[MM-58726] Add a loading screen to initial load of the web app (#27740)

webapp/package-lock.json

@@ -198,6 +198,7 @@
         "enzyme-to-json": "3.6.2",
         "eslint-plugin-no-only-tests": "3.1.0",
         "external-remotes-plugin": "1.0.0",
+        "html-loader": "5.1.0",
         "html-webpack-plugin": "5.5.0",
         "identity-obj-proxy": "3.0.0",
         "image-webpack-loader": "8.1.0",
@@ -12443,6 +12444,56 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/html-loader": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/html-loader/-/html-loader-5.1.0.tgz",
+      "integrity": "sha512-Jb3xwDbsm0W3qlXrCZwcYqYGnYz55hb6aoKQTlzyZPXsPpi6tHXzAfqalecglMQgNvtEfxrCQPaKT90Irt5XDA==",
+      "dev": true,
+      "dependencies": {
+        "html-minifier-terser": "^7.2.0",
+        "parse5": "^7.1.2"
+      },
+      "engines": {
+        "node": ">= 18.12.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      },
+      "peerDependencies": {
+        "webpack": "^5.0.0"
+      }
+    },
+    "node_modules/html-loader/node_modules/commander": {
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-10.0.1.tgz",
+      "integrity": "sha512-y4Mg2tXshplEbSGzx7amzPwKKOCGuoSRP/CjEdwwk0FOGlUbq6lKuoyDZTNZkmxHdJtp54hdfY/JUrdL7Xfdug==",
+      "dev": true,
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/html-loader/node_modules/html-minifier-terser": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/html-minifier-terser/-/html-minifier-terser-7.2.0.tgz",
+      "integrity": "sha512-tXgn3QfqPIpGl9o+K5tpcj3/MN4SfLtsx2GWwBC3SSd0tXQGyF3gsSqad8loJgKZGM3ZxbYDd5yhiBIdWpmvLA==",
+      "dev": true,
+      "dependencies": {
+        "camel-case": "^4.1.2",
+        "clean-css": "~5.3.2",
+        "commander": "^10.0.0",
+        "entities": "^4.4.0",
+        "param-case": "^3.0.4",
+        "relateurl": "^0.2.7",
+        "terser": "^5.15.1"
+      },
+      "bin": {
+        "html-minifier-terser": "cli.js"
+      },
+      "engines": {
+        "node": "^14.13.1 || >=16.0.0"
+      }
+    },
     "node_modules/html-minifier-terser": {
       "version": "6.1.0",
       "dev": true,
@@ -23719,7 +23770,7 @@
         "typescript": "^5.0.0"
       },
       "peerDependencies": {
-        "@mattermost/types": "9.3.0",
+        "@mattermost/types": "^9.3.0 || ^10.0.0",
         "typescript": "^4.3.0 || ^5.0.0"
       },
       "peerDependenciesMeta": {